RetroHexChat
Hex Paint is a pixel drawing program that opens on the chat's desktop. Draw on a grid of 32, 64 or 128 pixels in the sixteen colours of the chat. Use a pencil, lines, rectangles, ellipses and a fill, and undo any stroke. When it is ready, post it to a channel or a friend with a line of text, or save it as a PNG.
A drawing arrives in the conversation as a picture, every pixel a sharp square. Turn it into text art with ASCII Art and it arrives as coloured characters instead.